Odd outgoing smtp issue during certain times of day
Ok, so this has me stumped. I have also spoken with our ISP (comcast) and mail provider (GoDaddy), both are not only no help, but also stumped. Problem is only with outgoing email, incoming continues to work.
Bullet points of issue-
outgoing will work up until about 10 am approximately, then will stop sending. Will then seem to start working again at 4:35 pm until the next day around 10 am. This has happened 3 days in a row.
Happens only on network inside of our building on any connected device.
Outgoing works when connected to cellular and for offsite employees.
Happens across all email clients and computer type (windows, mac)
Bullet points of troubleshooting-
Confirmed email settings in client email programs.
Confirmed Passwords and User names (remember works, then stops, then works)
Godaddy webmail client works
Confirmed no ports blocked on router or through firewall
pinged GoDaddy server via telnet -
telnet smtpout.secureserver.net 465
Trying 173.201.192.229...
Connected to smtpout.secureserver.net.
Escape character is '^]'.
Connection closed by foreign host.
We had a hacking issue recently which got into the email server at GoDaddy, however it appears that most of the infiltration was external. That being said, not sure how they got onto the GoDaddy server to begin with. Have run virus scans on computers and appear to be clean...
Router is set up properly with no ports blocked, comcast confirmed. Comcast confirmed they are not blocking us through their security department. Port 25 not blocked. HOWEVER, during the process not our Static IP, but the IP of the gateway, which randomly gets a new lease from Comcast, did show up on 2 blacklist sites...
Initially, I assumed this was the problem and am in the process of trying to resolve, however when getting details, it shows up as the blacklist site stating they can't fix it and it is an ISP level issue. Though comcast says they don't have a block. In addition, it seems to be only during certain times of the day, which makes no sense whatsoever.
Any ideas, I fear I am beginning to run in circles that is closing off my thinking of possible resolutions. Also important to note, I know some networking stuff via necessity, so speak slowly. Thank you for any assistance!
networking router email firewall port
asked Jan 7 at 22:49
adhoc it guyadhoc it guy
11
|
show 10 more comments
Ok, so this has me stumped. I have also spoken with our ISP (comcast) and mail provider (GoDaddy), both are not only no help, but also stumped. Problem is only with outgoing email, incoming continues to work.
Bullet points of issue-
outgoing will work up until about 10 am approximately, then will stop sending. Will then seem to start working again at 4:35 pm until the next day around 10 am. This has happened 3 days in a row.
Happens only on network inside of our building on any connected device.
Outgoing works when connected to cellular and for offsite employees.
Happens across all email clients and computer type (windows, mac)
Bullet points of troubleshooting-
Confirmed email settings in client email programs.
Confirmed Passwords and User names (remember works, then stops, then works)
Godaddy webmail client works
Confirmed no ports blocked on router or through firewall
pinged GoDaddy server via telnet -
telnet smtpout.secureserver.net 465
Trying 173.201.192.229...
Connected to smtpout.secureserver.net.
Escape character is '^]'.
Connection closed by foreign host.
We had a hacking issue recently which got into the email server at GoDaddy, however it appears that most of the infiltration was external. That being said, not sure how they got onto the GoDaddy server to begin with. Have run virus scans on computers and appear to be clean...
Router is set up properly with no ports blocked, comcast confirmed. Comcast confirmed they are not blocking us through their security department. Port 25 not blocked. HOWEVER, during the process not our Static IP, but the IP of the gateway, which randomly gets a new lease from Comcast, did show up on 2 blacklist sites...
Initially, I assumed this was the problem and am in the process of trying to resolve, however when getting details, it shows up as the blacklist site stating they can't fix it and it is an ISP level issue. Though comcast says they don't have a block. In addition, it seems to be only during certain times of the day, which makes no sense whatsoever.
Any ideas, I fear I am beginning to run in circles that is closing off my thinking of possible resolutions. Also important to note, I know some networking stuff via necessity, so speak slowly. Thank you for any assistance!
networking router email firewall port
asked Jan 7 at 22:49
adhoc it guyadhoc it guy
11
You have a device in / on your network which is doing time-of-day filtering. How big is the business, and who set up the connection?
– davidgo
Jan 7 at 22:57
That's what i had thought, but the business is not big, and I set up the network along with one of my other guys. We didn't include any time of day filtering. This also started happening all of a sudden with no changes to the network. Also, just to clarify, I am obviously suspicious of the time of day issue, but entirely sure if that has anything to do with it, or if it is just intermittent and happens to be morning'ish and afternoon'ish
– adhoc it guy
Jan 7 at 23:00
My next step would be to usetcpdumpor Wireshark to watch a failed connection, and see how far it gets/how it fails. If it's working at the TCP/IP level, and you have a Mac client using Apple's Mail app, use its Connection Doctor (Window menu > Connection Doctor > click Show Detail and then Check Again). BTW, yourtelnettest suggests you're using SMTPS on port 465; what happens if you switch to submission on port 587?
– Gordon Davisson
Jan 8 at 1:58
I will check the tcpdump as well as run the connection doctor. The outgoing email is currently working at 8:30 am and yesterday began working again around 4 pm. I just ran the telnet string with 587 and it is timing out. However, I should note that the GoDaddy server doesn't include 587 as one of their mail client ports.
– adhoc it guy
Jan 8 at 16:27
It is currently after 11:30 am and outgoing email is still working, which is good but frustrating because a few of the things to test I can't really test until it stops working, and I haven't done anything to cause it to work. I would rather know what is going on than it just magically work!
– adhoc it guy
Jan 8 at 19:41
|
show 10 more comments
Ok, so this has me stumped. I have also spoken with our ISP (comcast) and mail provider (GoDaddy), both are not only no help, but also stumped. Problem is only with outgoing email, incoming continues to work.
Bullet points of issue-
outgoing will work up until about 10 am approximately, then will stop sending. Will then seem to start working again at 4:35 pm until the next day around 10 am. This has happened 3 days in a row.
Happens only on network inside of our building on any connected device.
Outgoing works when connected to cellular and for offsite employees.
Happens across all email clients and computer type (windows, mac)
Bullet points of troubleshooting-
Confirmed email settings in client email programs.
Confirmed Passwords and User names (remember works, then stops, then works)
Godaddy webmail client works
Confirmed no ports blocked on router or through firewall
pinged GoDaddy server via telnet -
telnet smtpout.secureserver.net 465
Trying 173.201.192.229...
Connected to smtpout.secureserver.net.
Escape character is '^]'.
Connection closed by foreign host.
We had a hacking issue recently which got into the email server at GoDaddy, however it appears that most of the infiltration was external. That being said, not sure how they got onto the GoDaddy server to begin with. Have run virus scans on computers and appear to be clean...
Router is set up properly with no ports blocked, comcast confirmed. Comcast confirmed they are not blocking us through their security department. Port 25 not blocked. HOWEVER, during the process not our Static IP, but the IP of the gateway, which randomly gets a new lease from Comcast, did show up on 2 blacklist sites...
Initially, I assumed this was the problem and am in the process of trying to resolve, however when getting details, it shows up as the blacklist site stating they can't fix it and it is an ISP level issue. Though comcast says they don't have a block. In addition, it seems to be only during certain times of the day, which makes no sense whatsoever.
Any ideas, I fear I am beginning to run in circles that is closing off my thinking of possible resolutions. Also important to note, I know some networking stuff via necessity, so speak slowly. Thank you for any assistance!
networking router email firewall port
asked Jan 7 at 22:49
adhoc it guyadhoc it guy
11
Ok, so this has me stumped. I have also spoken with our ISP (comcast) and mail provider (GoDaddy), both are not only no help, but also stumped. Problem is only with outgoing email, incoming continues to work.
Bullet points of issue-
outgoing will work up until about 10 am approximately, then will stop sending. Will then seem to start working again at 4:35 pm until the next day around 10 am. This has happened 3 days in a row.
Happens only on network inside of our building on any connected device.
Outgoing works when connected to cellular and for offsite employees.
Happens across all email clients and computer type (windows, mac)
Bullet points of troubleshooting-
Confirmed email settings in client email programs.
Confirmed Passwords and User names (remember works, then stops, then works)
Godaddy webmail client works
Confirmed no ports blocked on router or through firewall
pinged GoDaddy server via telnet -
telnet smtpout.secureserver.net 465
Trying 173.201.192.229...
Connected to smtpout.secureserver.net.
Escape character is '^]'.
Connection closed by foreign host.
We had a hacking issue recently which got into the email server at GoDaddy, however it appears that most of the infiltration was external. That being said, not sure how they got onto the GoDaddy server to begin with. Have run virus scans on computers and appear to be clean...
Router is set up properly with no ports blocked, comcast confirmed. Comcast confirmed they are not blocking us through their security department. Port 25 not blocked. HOWEVER, during the process not our Static IP, but the IP of the gateway, which randomly gets a new lease from Comcast, did show up on 2 blacklist sites...
Initially, I assumed this was the problem and am in the process of trying to resolve, however when getting details, it shows up as the blacklist site stating they can't fix it and it is an ISP level issue. Though comcast says they don't have a block. In addition, it seems to be only during certain times of the day, which makes no sense whatsoever.
Any ideas, I fear I am beginning to run in circles that is closing off my thinking of possible resolutions. Also important to note, I know some networking stuff via necessity, so speak slowly. Thank you for any assistance!
networking router email firewall port
networking router email firewall port
asked Jan 7 at 22:49
adhoc it guyadhoc it guy
11
asked Jan 7 at 22:49
adhoc it guyadhoc it guy
11
asked Jan 7 at 22:49
adhoc it guyadhoc it guy
11
asked Jan 7 at 22:49
adhoc it guyadhoc it guy
11
asked Jan 7 at 22:49
adhoc it guyadhoc it guy
11
11
You have a device in / on your network which is doing time-of-day filtering. How big is the business, and who set up the connection?
– davidgo
Jan 7 at 22:57
That's what i had thought, but the business is not big, and I set up the network along with one of my other guys. We didn't include any time of day filtering. This also started happening all of a sudden with no changes to the network. Also, just to clarify, I am obviously suspicious of the time of day issue, but entirely sure if that has anything to do with it, or if it is just intermittent and happens to be morning'ish and afternoon'ish
– adhoc it guy
Jan 7 at 23:00
My next step would be to usetcpdumpor Wireshark to watch a failed connection, and see how far it gets/how it fails. If it's working at the TCP/IP level, and you have a Mac client using Apple's Mail app, use its Connection Doctor (Window menu > Connection Doctor > click Show Detail and then Check Again). BTW, yourtelnettest suggests you're using SMTPS on port 465; what happens if you switch to submission on port 587?
– Gordon Davisson
Jan 8 at 1:58
I will check the tcpdump as well as run the connection doctor. The outgoing email is currently working at 8:30 am and yesterday began working again around 4 pm. I just ran the telnet string with 587 and it is timing out. However, I should note that the GoDaddy server doesn't include 587 as one of their mail client ports.
– adhoc it guy
Jan 8 at 16:27
It is currently after 11:30 am and outgoing email is still working, which is good but frustrating because a few of the things to test I can't really test until it stops working, and I haven't done anything to cause it to work. I would rather know what is going on than it just magically work!
– adhoc it guy
Jan 8 at 19:41
|
show 10 more comments
You have a device in / on your network which is doing time-of-day filtering. How big is the business, and who set up the connection?
– davidgo
Jan 7 at 22:57
That's what i had thought, but the business is not big, and I set up the network along with one of my other guys. We didn't include any time of day filtering. This also started happening all of a sudden with no changes to the network. Also, just to clarify, I am obviously suspicious of the time of day issue, but entirely sure if that has anything to do with it, or if it is just intermittent and happens to be morning'ish and afternoon'ish
– adhoc it guy
Jan 7 at 23:00
My next step would be to usetcpdumpor Wireshark to watch a failed connection, and see how far it gets/how it fails. If it's working at the TCP/IP level, and you have a Mac client using Apple's Mail app, use its Connection Doctor (Window menu > Connection Doctor > click Show Detail and then Check Again). BTW, yourtelnettest suggests you're using SMTPS on port 465; what happens if you switch to submission on port 587?
– Gordon Davisson
Jan 8 at 1:58
I will check the tcpdump as well as run the connection doctor. The outgoing email is currently working at 8:30 am and yesterday began working again around 4 pm. I just ran the telnet string with 587 and it is timing out. However, I should note that the GoDaddy server doesn't include 587 as one of their mail client ports.
– adhoc it guy
Jan 8 at 16:27
It is currently after 11:30 am and outgoing email is still working, which is good but frustrating because a few of the things to test I can't really test until it stops working, and I haven't done anything to cause it to work. I would rather know what is going on than it just magically work!
– adhoc it guy
Jan 8 at 19:41
You have a device in / on your network which is doing time-of-day filtering. How big is the business, and who set up the connection?
– davidgo
Jan 7 at 22:57
You have a device in / on your network which is doing time-of-day filtering. How big is the business, and who set up the connection?
– davidgo
Jan 7 at 22:57
That's what i had thought, but the business is not big, and I set up the network along with one of my other guys. We didn't include any time of day filtering. This also started happening all of a sudden with no changes to the network. Also, just to clarify, I am obviously suspicious of the time of day issue, but entirely sure if that has anything to do with it, or if it is just intermittent and happens to be morning'ish and afternoon'ish
– adhoc it guy
Jan 7 at 23:00
That's what i had thought, but the business is not big, and I set up the network along with one of my other guys. We didn't include any time of day filtering. This also started happening all of a sudden with no changes to the network. Also, just to clarify, I am obviously suspicious of the time of day issue, but entirely sure if that has anything to do with it, or if it is just intermittent and happens to be morning'ish and afternoon'ish
– adhoc it guy
Jan 7 at 23:00
My next step would be to use
tcpdump or Wireshark to watch a failed connection, and see how far it gets/how it fails. If it's working at the TCP/IP level, and you have a Mac client using Apple's Mail app, use its Connection Doctor (Window menu > Connection Doctor > click Show Detail and then Check Again). BTW, your telnet test suggests you're using SMTPS on port 465; what happens if you switch to submission on port 587?– Gordon Davisson
Jan 8 at 1:58
My next step would be to use
tcpdump or Wireshark to watch a failed connection, and see how far it gets/how it fails. If it's working at the TCP/IP level, and you have a Mac client using Apple's Mail app, use its Connection Doctor (Window menu > Connection Doctor > click Show Detail and then Check Again). BTW, your telnet test suggests you're using SMTPS on port 465; what happens if you switch to submission on port 587?– Gordon Davisson
Jan 8 at 1:58
I will check the tcpdump as well as run the connection doctor. The outgoing email is currently working at 8:30 am and yesterday began working again around 4 pm. I just ran the telnet string with 587 and it is timing out. However, I should note that the GoDaddy server doesn't include 587 as one of their mail client ports.
– adhoc it guy
Jan 8 at 16:27
I will check the tcpdump as well as run the connection doctor. The outgoing email is currently working at 8:30 am and yesterday began working again around 4 pm. I just ran the telnet string with 587 and it is timing out. However, I should note that the GoDaddy server doesn't include 587 as one of their mail client ports.
– adhoc it guy
Jan 8 at 16:27
It is currently after 11:30 am and outgoing email is still working, which is good but frustrating because a few of the things to test I can't really test until it stops working, and I haven't done anything to cause it to work. I would rather know what is going on than it just magically work!
– adhoc it guy
Jan 8 at 19:41
It is currently after 11:30 am and outgoing email is still working, which is good but frustrating because a few of the things to test I can't really test until it stops working, and I haven't done anything to cause it to work. I would rather know what is going on than it just magically work!
– adhoc it guy
Jan 8 at 19:41
|
show 10 more comments
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You have a device in / on your network which is doing time-of-day filtering. How big is the business, and who set up the connection?
– davidgo
Jan 7 at 22:57
That's what i had thought, but the business is not big, and I set up the network along with one of my other guys. We didn't include any time of day filtering. This also started happening all of a sudden with no changes to the network. Also, just to clarify, I am obviously suspicious of the time of day issue, but entirely sure if that has anything to do with it, or if it is just intermittent and happens to be morning'ish and afternoon'ish
– adhoc it guy
Jan 7 at 23:00
My next step would be to use
tcpdumpor Wireshark to watch a failed connection, and see how far it gets/how it fails. If it's working at the TCP/IP level, and you have a Mac client using Apple's Mail app, use its Connection Doctor (Window menu > Connection Doctor > click Show Detail and then Check Again). BTW, yourtelnettest suggests you're using SMTPS on port 465; what happens if you switch to submission on port 587?– Gordon Davisson
Jan 8 at 1:58
I will check the tcpdump as well as run the connection doctor. The outgoing email is currently working at 8:30 am and yesterday began working again around 4 pm. I just ran the telnet string with 587 and it is timing out. However, I should note that the GoDaddy server doesn't include 587 as one of their mail client ports.
– adhoc it guy
Jan 8 at 16:27
It is currently after 11:30 am and outgoing email is still working, which is good but frustrating because a few of the things to test I can't really test until it stops working, and I haven't done anything to cause it to work. I would rather know what is going on than it just magically work!
– adhoc it guy
Jan 8 at 19:41