email forwarding

[jcombs_31]

I have a few emails being forwarded for different domains. If I set the forwarded email address to something like hotmail, it goes through, but ISPs and other servers are blocking it. What would be the reason for this?

example

Jul 30 00:25:19 mmt1 postfix/smtp[27791]: B7A0E49491A6: to=<xxx@domain.com>, orig_to=<info@mydomain.com>, relay=mx.east.cox.net[68.1.17.3]:25, delay=1068, delays=1042/0.03/26/0, dsn=4.0.0, status=deferred (host mx.east.cox.net[68.1.17.3] refused to talk to me: 421 eastrmimpi01.cox.net IMP 66.71.250.89 DNS check failure - try again later)

If I sent this directly from outlook, I never get a message back from my server saying the message could not be sent.

I'm looking more through the logs and see a lot of blocked for abuse messages. These are just basic messages, so something coming from my server these other mail servers don't like.

Edit: I've also seen some errors "DNS Check Error"

ul 30 03:28:39 mmt1 postfix/smtp[7654]: B7A0E49491A6: to=, orig_to=, relay=mx.east.cox.net[68.1.17.3]:25, delay=12068, delays=12042/0.04/26/0, dsn=4.0.0, status=deferred (host mx.east.cox.net[68.1.17.3] refused to talk to me: 421 eastrmimpi05.cox.net IMP 66.71.250.89 DNS check failure - try again later)

[till]

Make sure that the hostname of your server exists in DNS and that the IP of your server is a static IP and that you have a correct reverse dns record for your IP pointing to the hostname of your server.

[jcombs_31]

For some reason I can see Reverse DNS was no longer set up. My provider is adding the entry for me, I'll see if that fixes it.

[jcombs_31]

Now I see I'm getting blocked for abuse from Att

Jul 31 16:55:42 mmt1 postfix/smtp[28533]: CA3B6494916C: to=<info@domain.com>, relay=127.0.0.1[127.0.0.1]:10024, delay=11, delays=3.3/0.01/0.01/7.5, dsn=2.6.0, status=sent (250 2.6.0 Ok, id=15546-01, from MTA([127.0.0.1]:10025): 250 2.0.0 Ok: queued as 012ED4949172)
Jul 31 16:55:42 mmt1 postfix/qmgr[16141]: CA3B6494916C: removed
Jul 31 16:55:42 mmt1 postfix/smtp[30502]: 012ED4949172: host gateway-f1.isp.att.net[204.127.217.16] refused to talk to me: 550-66.71.250.89 blocked by ldapu=rblmx,dc=att,dc=net 550 Error - Blocked for abuse. See http://att.net/blocks
Jul 31 16:55:43 mmt1 postfix/smtp[30502]: 012ED4949172: to=<me@bellsouth.net>, orig_to=<info@domain.com>, relay=gateway-f2.isp.att.net[207.115.11.16]:25, delay=1.1, delays=0.51/0.01/0.61/0, dsn=4.0.0, status=deferred (host gateway-f2.isp.att.net[207.115.11.16] refused to talk to me: 550-66.71.250.89 blocked by ldapu=rblmx,dc=att,dc=net 550 Error - Blocked for abuse. See http://att.net/blocks)

Looking at the att.net/blocks page it seems to think I am spamming. Why would this be and how can I fix it? Reverse DNS is now working and resolving to my hostname.

[falko]

I think you should contact AT&T support.

[jcombs_31]

I did, I got an email back pretty quick saying they didn't see my IP address as blocked. Strange.

[falko]

Hm, strange... You could try this form: http://worldnet.att.net/general-info/block_admin.html

[jcombs_31]

That's the form I filled out to get a response. I sent an email back but no further response yet. I sent them the error notice right from my logs which clearly shows that I'm being blocked for abuse, but they say they don't see it. Doesn't make any sense.

I did get through to another server that was giving me problems before, so at least part of the problem is fixed.