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| EHLO: different size allowed, from different servers to ext https://forum.linode.com/viewtopic.php?f=11&t=2452 |
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| Author: | detesn@sea-invest.be [ Tue Sep 19, 2006 5:52 am ] |
| Post subject: | EHLO: different size allowed, from different servers to ext |
Hi, When I telnet to an external SMTP server from different servers on our network. EHLO answers with different allowed mail sizes. 30Mb from server 1, only 3Mb from another server. EXAMPLE to yahoo SMTP server: telnet 67.28.113.10 25 EHLO answer if I try it from our server 1: 220 mta177.mail.re2.yahoo.com ESMTP YSmtp service ready ehlo 250-mta177.mail.re2.yahoo.com 250-8BITMIME 250-SIZE 31981568 250 PIPELINING anwer if I try it from one of our other servers: 220 mta162.mail.re2.yahoo.com ESMTP YSmtp service ready ehlo 250-Requested mail action okay, completed 250-8BITMIME 250 SIZE 3072000 quit 221 mta162.mail.re2.yahoo.com Does anyone know what the reason can be? Thank you very much for your help. Best Regards, Nico |
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| Author: | detesn@sea-invest.be [ Tue Sep 19, 2006 9:37 am ] |
| Post subject: | EHLO: different size allowed, --> Firewall setting |
I've found it: It was a rule on the firewall. (Inbound = very strange since it is outgoing). another thing that is very strange: Why does the external SMTP server answers with the size that our FW allows, and not with what is allowed on -in this example yahoo's SMTP server? |
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